Essentially, it's borked.  Welcome to the Club of the Missing Music Library Users.  You are not alone.

Spend some time reading some of the many threads about this, and despair

Thank you. I thought that was the case. I will try to contact support to see if they have a fix yet. SONOS should had never roll out the new app without adequate beta testing.   

Where are your music files.?  NAS? USB stick? PC?  There are workarounds depending on where your files are located. 

I agree 100% with your assessment that they never should have released this update. Let’s hope any bonuses their development and QA teams might receive for getting the update out “on time” are forfeited for such a dismal job.